DevTools: Add buttons to add box-shadow and text-shadow properties in SSP

third_party/WebKit/Source/devtools/front_end/ui/toolbar.css

 /*
  * Copyright (c) 2014 The Chromium Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 :host {
     flex: none;
     padding: 0 2px;
 }
@@ skipping 415 matching lines @@
 .toolbar-state-replay-outline .animation-control-toolbar-item.toolbar-glyph {
     -webkit-mask-position: -320px -24px;
     background-color: rgb(66, 129, 235) !important;
 }
 
 .toolbar-state-play-outline .animation-control-toolbar-item.toolbar-glyph {
     -webkit-mask-position: -320px -48px;
     background-color: rgb(66, 129, 235) !important;
 }
 
+.box-shadow-toolbar-item.toolbar-glyph {
+    -webkit-mask-position: -160px -48px;
+}
+
+.text-shadow-toolbar-item.toolbar-glyph {
+    -webkit-mask-position: -192px -48px;
+}
+
 .background-color-toolbar-item.toolbar-glyph {
     -webkit-mask-position: -96px -144px;
 }
 
 .foreground-color-toolbar-item.toolbar-glyph {
     -webkit-mask-position: -128px -144px;
 }
 
 .layout-editor-toolbar-item.toolbar-glyph {
     -webkit-mask-position: 0 -144px;
@@ skipping 39 matching lines @@
 .toolbar-state-active .filter-toolbar-item.toolbar-glyph,
 .toolbar-state-active .block-toolbar-item.toolbar-glyph {
     background-color: rgb(216, 0, 0) !important;
 }
 
 :host-context(.-theme-with-dark-background) .toolbar-state-active .filter-toolbar-item.toolbar-glyph,
 :host-context(.-theme-with-dark-background) .toolbar-state-active .block-toolbar-item.toolbar-glyph,
 :host-context(.-theme-with-dark-background) .toolbar-state-on .record-toolbar-item.toolbar-glyph {
     background-color: hsl(0, 100%, 65%) !important;
 }